If the reed is very dry, the binding may loosen if you put the reed on the bocal with lots of pressure. In most cases also the 3rd wire under the binding slips.
You can try to get the binding back into its correct position and repaint it.But it will be difficult at all. However, soak you reed long enough before playing, at least min. 5 minutes!
Take care that you only soak the cane up to the 1st wire, not the binding! Schellack, for example, is – in comparison to synthetic resin coatings – water sensitive! Please always keep that in mind!
We highly recommend to check the plugging depth of reed and bocal. Use your diamond reamerto slightly adjust your bassoon reed for better fitting on your bocal.